AC-DC linear power supplies include the DA series.
DA Linear Power Supplies series are characterized by low output noise and slew rate. DA Power Supplies series can be used as power amplifiers, in fact it is possible to superimpose a sinusoidal voltage of 8/10 Vpp up to a frequency of 50 kHz on set voltage.
Another application for this family of Power Supplies is
the simulation of the curve of a photovoltaic panel by
programming the voltage and current.